XC6504 Datasheet, PDF (25/32 Pages) Torex Semiconductor – 0.6A Ultra Low Power Consumption Small Voltage Regulator (CL Capacitor-Less)

■PACKAGING INFORMATION (Continued)
● USPQ-4B04 Power Dissipation
Power dissipation data for the USPQ-4B04 is shown in this page.
The value of power dissipation varies with the mount board conditions.
Please use this data as the reference data taken in the following condition.
XC6504
Series
1. Measurement Condition
Condition
: Mount on a board
Ambient
: Natural convection
Soldering
: Lead (Pb) free
Board Dimensions : 40 x 40 mm (1600mm²)
Board Structure
: 4 Copper Layers
Each layer is connected to the package heat-sink
and terminal pin No.1.
Each layer has approximately 800mm² copper
area.
Material
: Glass Epoxy (FR-4)
Thickness
: 1.6 mm
Through-hole
: 4 x 0.8 Diameter
Evaluation Board (Unit: mm)
2. Power Dissipation vs. Ambient Temperature
Board Mount (Tj max = 125℃)
Ambient Temperature（℃）
Power Dissipation Pd（mW） Thermal Resistance (℃/W)
25
550
181.82
85
220
600
500
400
300
200
100
0
25
Pd vs Ta
45
65
85
105
125
Ampient Temperature Ta（℃）
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